Answer:
The angular speed of the wheel is 0.452 rad/s
Explanation:
The angle through which the car wheel turns, Δθ = 277° = 277/360 × 2·π radian
The time it takes for the car wheel to turn, Δt = 10.7 s
The angular speed, ω is given by the following equation;
Substituting the known values for Δθ and Δt gives;
The angular speed of the wheel = 0.452 rad/s
Answer:
2 kg
Explanation:
Assuming the rod's mass is uniformly distributed, the center of mass is at half the length.
Sum of the moments at the balance point:
-(Mg)(L/3) + (mg)(L/2 − L/3) = 0
(Mg)(L/3) = (mg)(L/2 − L/3)
(Mg)(L/3) = (mg)(L/6)
2M = m
M = 1 kg, so m = 2 kg.
The mass of the rod is 2 kg.
- - <span>c. increased use of surrounding land
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This is because its not a good consequence from the upward of urban growth.
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Answer:
A) True B) False C) True
Explanation:
To understand this concept we need to plan the equations related to the movement in the X-axis and the Y-axis thus we can see the behavior of the particle under the different forces.
In the attached image we can check the equation related with the forces.
A) The sum of the forces is 0 in both axis, therefore there is no movement of the particle.
B) In the previous point, we figure out that there is no movement and therefore no acceleration effect.
C) If a body or particle is not accelerating it will be in equilibrium or traveling at a constant velocity.
Answer: Graphite and iodine are non-metals that have lustre.
Explanation:
Graphite is a non-metal which has metallic luster. Metallic lustre is due to presence of free electrons in them, generally non metals don't exhibit this property, but iodine and graphite are non metals they exhibit metallic lustre.